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Development of a new boundary layer control technique for automotive wind tunnel testing

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dc.contributor.advisor Miller, L. Scott en_US
dc.contributor.author Farrell, Thomas Elmer
dc.date.accessioned 2007-08-23T12:49:16Z
dc.date.available 2007-08-23T12:49:16Z
dc.date.issued 2005-12
dc.identifier.isbn 9780542757679
dc.identifier.other t05051
dc.identifier.other AAT 1436555:UMI
dc.identifier.uri http://hdl.handle.net/10057/760
dc.description Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Aerospace Engineering. en
dc.description "December 2005." en
dc.description.abstract Many different boundary layer control techniques are used in ground vehicle aerodynamic testing including suction, blowing, ground-boards, and rolling roads. In this paper an alternative boundary layer control method is discussed. Low momentum flow in the boundary layer can be energized using circulation from a rotating cylinder protruding through the floor. A comparison study shows that this application, if effective, may be a more cost-efficient solution than current road vehicle boundary layer control techniques. A pilot tunnel test was performed in the WSU Boundary Layer Tunnel with the results showing a boundary layer profile with an initial momentum thickness of 0.098 in. could be reduced by 40-45% with rotational velocities of approximately 5000rpm. Following this successful test, a full scale test performed in the WSU Walter H. Beech Memorial Wind Tunnel demonstrated the feasibility of the concept. An initial momentum thickness of 0.1445 in. was reduced 29% with a rotational velocity of 3900rpm. The results found seem to indicate this technique would be a very viable option provided certain aspects including cylinder balance, sizing, and rotational velocity could be optimized in future testing. en
dc.format.extent 1607509 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.rights Copyright Thomas Elmer Farrell, 2005. All rights reserved. en
dc.subject.lcsh Electronic dissertations en
dc.title Development of a new boundary layer control technique for automotive wind tunnel testing en
dc.type Thesis en

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